Understanding the Humming Sound
Before we tackle the issue of a garbage disposal making a humming noise, it’s important to understand what might be causing it. Usually, a humming sound indicates that the disposal is receiving power but the blades are not turning. This can be due to a jam, an overload, or a malfunctioning motor.
Step 1: Safety First
To avoid any accidents, ensure the disposal is turned OFF. It’s crucial to cut the power by either unplugging it from the outlet under the sink or turning off the circuit breaker that powers the disposal.
Step 2: Check for Obvious Jamming
Peek down the drain with a flashlight to look for any foreign objects that might be causing the jam. If you find anything, use a pair of pliers or tongs to remove the object. Never put your hand directly into the disposal.
Step 3: Use the Allen (Hex) Wrench
Most garbage disposals come with an Allen wrench that fits into a hole at the bottom of the disposal unit. If yours did not, you’ll need to find one that fits. Insert the wrench into the hole and turn it back and forth. This manually moves the disposal’s motor shaft and can help free up whatever is jamming the blades.
Step 4: Hit the Reset Button
After attempting to manually free the blades, locate the reset button on the bottom of the disposal unit. It’s usually a red button. If it’s popped out, it means the unit has tripped its internal breaker. Push it back in to reset it. Wait a few minutes before turning on the disposal to test if it’s working.
Step 5: Test the Disposal
Restore the power to the disposal, either by plugging it back in or flipping the circuit breaker back on. Turn on the water and then the disposal to check if the humming has stopped and the blades are moving. If the blades are moving and the disposal sounds normal, your problem has likely been resolved.
Step 6: Check for Electrical Issues
If the disposal is still humming and not working, the problem might not be a jam but an electrical issue. Over time, the motor can burn out. If you suspect an electrical issue and are not familiar with electrical systems, it’s safest to call a professional.
Extra Tips
- Prevention: Regular maintenance and careful use can prevent jams. Avoid putting fibrous or hard items down the disposal, like corn husks or bones.
- Cleaning: Occasionally using a mixture of vinegar and baking soda can help keep the disposal clean and clear of minor clogs.
- Professional Help: If you’re not confident about attempting these steps on your own, it’s always better to call a licensed plumber to prevent further damage to your disposal or injury to yourself.
If you’ve followed these steps and your garbage disposal is still only humming, it might be time for a replacement. Age and certain types of damage can render a unit beyond repair, but a professional can give you a definitive answer.